That's because Senegal have been in the top 50 FIFA rankings consistently, and he has a bunch of caps for them. It's simple really.

But the new ruling stinks though. Its meant to allow space for home grown players to develop which is a good thing. But it only makes the rich teams richer as clubs like Rovers will have to more and more rely on loans from these richer clubs or sign lesser desirable British players only. The rule needs to be changed to only apply to premier league clubs. They have enough benefits from the game and it only means clubs like rovers will suffer more from it.